Why do the cast of MTVs "Jersey Shore" look Mexican? Arent they Italians?

[Shaniqua Anderson]

Pauly D and Snooki look Amerindian from South America (Mexico)
And the rest look a bit Mestizo.

Why do they look Mexican if they are Italian?

 

[Tay]

Snooki is actually portuguese, the rest are italian. By the way your picture is hilarious...haha.